Scientists Claim Too Many Vitamins Can Give You Cancer Taking extra vitamins “does more harm than good” and increases the risk of cancer and heart disease, a major study has revealed. Around 18 million Brits down supplements thinking they are getting a health boost, but research has found they can have the opposite effect. Dr Tim Byers – one of the world’s top cancer experts – examined research papers spanning 30 years. He looked at three widely taken ­over-the-counter pills and supplements, vitamin E tablets, beta-carotene and folic acid, and warned against exceeding the recommended daily amount. Dr Byers said: “We are not sure why this is happening but evidence shows that people who take more dietary supplements than needed tend to have a higher risk of developing cancer. “When we first tested dietary supplements in animal models we found that the results were promising. “Eventually we were able to move on to humans. We studied thousands of patients for 10 years who were taking dietary supplements and placebos. “We found that the supplements were actually not beneficial for their health. In fact, some people actually got more cancer while on the vitamins.” Folic acid supplements are thought to be taken by more than 230,000 pregnant UK women each year as it can help prevent spina bifida and other birth defects affecting the brain and spine. FULL REPORT